期刊
ANALYTICA CHIMICA ACTA
卷 573, 期 -, 页码 439-444出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2006.05.047
关键词
thermogravimetry (TG)-bridge; mass spectrometry; fire emissions; combustion; pine needles; fire retardant; on-line monitoring
In this work a new method called TG-bridge/mass spectrometry is presented, for the on-line monitoring of the pine needles combustion emissions in a common lab furnace. The TG-bridge (thermogravimetry-bridge) system has been developed in-house as a TG-MS (thermogravimetry-mass spectrometry) interface, for TG-MS analysis. In this work, TG-bridge was used for directly sampling of the combustion emissions from the inside of the furnace and transferring them into the mass spectrometer (MS), without disturbing the sub-pressure conditions inside the MS ion source. The effect of Fire-Trol 931 (a long-term fire retardant) on the emissions, produced during the combustion of pine needles, is tested in the lab for future application in the field. It was shown that in treated samples, increased evolution of ammonia and aromatic compounds took place, compared to untreated samples. Maximum concentrations of specific compounds, such as benzene and toluene, evolved during the combustion experiments in the furnace, were determined. (c) 2006 Elsevier B.V. All rights reserved.
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